Great Product! Follow the Directions!
Works perfectly! However, you MUST program the unit during setup and installation. Some programming specs are not readily known by the DIY'er, so this may be an issue. I had the advantage of replacing my T-Stat with an exact duplicate. I was replacing my old Honeywell that the backlight had failed on with an exact replacement. Heat pump settings can be not as straight forward as you might think. There are a number of different possible configurations for heat pumps. I was able to get the settings for the replacement out of the old one. I went to the setup function on both units and simply copied my same settings from the old one into the new one for each step. If you are doing a fresh install, however, some of the settings required may not be so readily known without having the heat pump documentation.
Verified purchase: YesCondition: Pre-owned